Tractor.



J. B. BARTHOLOMEW.

TRACTOR.

, APPLICATlON HLED AUG. l. 19?- 1,199,334, lzltvntmlSept. 26, 1916.

' 2 SHEETS-SHEET 1.

Witnesses jnveno We UNITED STATES PATENT OFFICE.

JOHN B. BARTHOLOMEW, OF PEORIA, ILLINOIS, ASSIGNOR TO AVERY COMPANY, OF

7 PEORIA, ILLINOIS, A CORPORATION OF ILLINO S.

TRACTOR.

Specification of Letters Patent.

Patented Sept. 26, 1916.

Application filed August 1, 1912. Serial No. 712,684.

.lates to the devices for cooling the water used to cool the engine and the devices for handling the exhaust gases.

One of the objects, of the invention is to provide a water cooler or radiator adapted to be effective while the tractor is standing still as well as while the tractor is in motion.

Another object of the invention is toprovide a radiator adapted to make use of the Wind in cooling the water and to be as effective while the wind is in one direction as it is when in another.

A further object is to provide a radiator so related to the devices for handling the exhaust gases that the gases will cause a draft of cool air through the radiator elements. p

Further objects will be apparent from the following'speeification and claims: v

Of the drawings which illustrate one embodiment of my invention, Figure 1 is a side elevation, Fig. 2 is a fragmentary sectional view taken along .the line 2-2 of Fig. 1. Fig. 3 is a plan, view partly in section along the line 33 of Fig. 2. Y 1

Referring to the drawings, 1 represents as awhole the main frame of the tractor. This frame comprises two parallel side ele ments 2, 2. The frame is mounted upon the rear driving wheels 3 and the front steer ing wheels 4. Mounted on the main frame 1 is a supplemental: or power plant frame comprising parallel side elements 5, 5 which rest uponthereto.

power plant parts including the engine which is indicated as a whole by 6, and the radiator which is indicated as a whole b 7. The engine can be connected with the,

drive wheels by means of suitable gearing 8 .in the other power connection through the gearing will reservoir 12 and a suitable clutch 9. vThe'arrangement is preferably such that when the power plant frame is in one extreme of its movement, connection will be established from the engine through the gearing 8 to the drive wheels, and when the power plant frame is extreme of its movement,"the

be broken. It will be understood that the whole power plant, including the radiator, moves when the power connection is made or broken.

The radiator 7 preferably has a main rectangular base plate 10 which is connected by means of bolts or rivets 11, 11 to the power plant frame elements 5, 5. This plate 10, in addition to forming a support for the other parts to be described, also serves as the upper wall of the lower head or reservoir 12. Side. and bottom walls of this reservoir are preferably formed from a single piece of 'metal 13 which is horizontally flanged at its upper peripheral part and connected to the plate -10 by'means of rivets 14, 14. I

Mounted on the plate 10 are 'four upright struts or braces 15, 15, these being suitably connected to the base plate and braced by means of angle plates 16, 16. Secured to the upright struts or braces 15, 15 is the upper head or drum 17 which is annular in shape, itbeing provided with the outer cylindrical wall 18, the inner cylindrical wall 19, the bottom wall 20 and the topj'wall 21'. Preferably the innerv cylindrical wall 19. is

extended upward a considerable distance 7 above the top wall 21 to form a stack- 22.

Preferably a part 21 of the top wall 21 is removable to permit the head or reservoir 18 to be filled with water. The removable part 21 isprovided with a handle 21".

Extending between the lower head or reservoir 12' and the upper head or reservoir 17 5 are pipes or flues 23, 23, these preferably being: arranged a series of circular rows. Each pipe or flt1e'23 extends through suitably positioned apertures in the wall 20 and in the plate 10 thus establishing communication between the upper and lower heads. I

A pipe 24 communicates with the head or preferably at its lo'werspart and this pipe leads to the cooling jackets for the cylinders of the engine (i. A second pipe 25 serves to lead the heated water back from the jackets to the upper head or reservoir 17 of the radiator.

26 is a pipe for leading the exhaust gases away from the engine cylinders. This pipe terminates in an exhaust head 27, which is located in the stack 22. This exhaust head is preferably annular in shape and its upper annularwall is provided with a series of openings 28, 28 through which the exhaust gases are discharged in a plurality of upward directed streams circumferentially arranged with respect to the stack. These streams of heated rapidly moving gas serve to induce a draft of air upward through the stack, the air reaching the stack being neces sarily drawn inward between the fines 23.

In operation the cool water passes through the pipe 24 to the cylinder jackets where it is heated and from which it passes through the pipe 25 to the upper head or reservoir 17. Here the water may remain for some minutes and be partly cooled by contact with the walls of the reservoir, especially the walls 18 and 19. The wall-18 is cooled by the naturally moving atmospheric air, and the wall 19 is cooled by the air drawn upward through the stack by the exhaust gases. The water in the reservoir 17 before it can reach the reservoir 12 and be again used in the cylinder jackets, must pass downward through the pipes or flues 23. In passing through these fines it is very effectively and completely cooled as these fiues are so arranged that the atmospheric air can very freely circulate between them regardless of the motion of the tractor and regardless of the direction of the wind. These flues are not inclosed in. any housing, boxing or jacket but are exposed on all sides and have their external surfaces directly exposed to a normal atmosphere and the wind from any direction can freely pass between them. In saying that the external surfaces of the pipes are exposed to the normal atmosphere, I refer to the fact that they are not surrounded by a casing or boxing, possibly inclosing a body of air, but that the atmosphere, generally, can have access to,

and contact with, them. Furthermore, on account of the induced draft upward through the stack 22, there is always an inward movement of air between the fines, this inward movement taking place irrespective'of the direction or strength of the wind. By removing the cover 21 additional water can easily be supplied at any time to replace losses from leakage or other causes.

I claim:

1. In a tractor, the combination with a frame and supporting wheels therefor, of

an internal combustion engine mounted upon the frame and provided with cylinders having cooling jackets, a plurality of vertical pipes each of relatively small diameter mounted on the frame and grouped about an unobstructed central vertical space and having their external surfaces directly exposed to the normal atmosphere, Water conducting means for connecting the pipes with the cylinder jackets whereby a circulation of water may be maintained through thejacln ets and through the pipes, and means positioned outside of the said unobstructed space, but in vertical registry therewith for causing a draft of air from the said central space along lines parallel to the pipes whereby air is caused to move inward between the pipes to replace the air withdrawn from the central space.

2. In a tractor, the combination with a frame and supporting wheels therefor, of an internal combustion engine mounted upon the frame and provided with cylinders having cooling jackets, a plurality of vertical pipes each of relatively small diameter mounted on the frame and grouped about an unobstructed central vertical space and having their external surfaces directly- 3. In a tractor, the combination with a frame and supporting wheels therefor, of an internal combustion engine mounted upon the frame and provided with cylinders having cooling jackets, a plurality of vertical pipes each of relatively small diameter mounted on the frame and grouped about an unobstructed central vertical space, and having their external surfaces directly ex posed to the normal atmosphere, water conducting means for connecting the pipes with the cylinderjackets whereby a circulation of water may be maintained through the jackets and through the pipes, and a vertical draft stack mounted with its lower edge in communication with the said central space, a pipe connected with the exhaust ports of the engine and with the stack for conducting the exhaust gases into the stack to cause a draft of air from the said central space along lines parallel to the pipes whereby air is caused to move inward between the pipes'to replace the air withdrawn from the central space.

4. In a tractor, the combination with a frame and supporting wheels therefor, of

an internal combustion engine mounted,

mounted on the frame and grouped about an unobstructed central vertical space and having their external surfaces directly exposed to the normal atmosphere, water con ducting means for connecting the pipes with the cylinder jackets whereby a circulation of water may be maintained through the jackets and through the pipes, a vertical draft stack mounted with its lower edge in communication with the said central space, an annular exhaust head located in the stack and provided in its upper wall with a plurality of peripherally arranged openings, a pipe connected with the exhaust ports of the engine and with the exhaust head for conducting the exhaust gases into the stack to cause a draft of air from thesaid central space along lines parallel to the pipes whereby air is caused to move inward between the pipes to replace the air withdrawn from the central space.

In a tractor, the combination with a frame and supporting wheels of an internal combustion engine mounted on the frame and provided with cylinders having cooling jackets, a plurality of vertical cooling pipes each of relatively small diameter grouped about an unobstructed central vertical space and freely exposed to the normal atmosphere in all directions, a reservoir with which all of the pipes are connected at their lower ends, an annular reservoir with which all of the pipes are connected at their upper ends, water conducting means for connecting the cylinder jackets with the upper reservoir and with the lower reservoir, whereby a circulation of water may be maintained through the jackets, through the reservoir and through the pipes, and means for causing a draft of air upward from the said central space through the opening in the upper annular reservoir, whereby air is caused to move inward between the pipes to replace the air withdrawn from the central space.

(i. In a tractor, the combination with a frame and supporting wheels of an internal combustion engine mounted on the frame and provided with cylinders having cooling jackets, a. plurality of vertical cooling pipes each of relatively small diameter grouped about an unobstructed central vertical space and freely exposed to the normal atmosphere in all directions, a-

reservoir with which all of the pipes are connected at their lower ends, an annular reservoir with which all of the pipes are connected at their upper ends, water conducting means for connecting the cylinder jackets with .the upper reservoir and with ,the lower reservolr, whereby a circulation: of water may be maintained through the jackets, through the reservoir and through the pipes, a vertical stack connected with the upper reservoir above the-central opening thereof for causing a draft of air from the said central space along the lines parallel to the vpipes, whereby air is caused to move inward between the pipes to replace the air withdrawn from the central space.

7. In a tractor, the combination with a frame and supporting wheels of an internal combustion engine mounted on the frame and provided withcylinders having cooling jackets, a plurality of vertical cooling pipes each of relatively small diameter grouped about an unobstructed central vertical space and freely exposed to the normal atmosphere. in all directions, a reservoir with which all of the pipes are connected at their lower ends, an annular reservoir with ports of the engine, and with the exhaust head for conducting the exhaust gases into the stack to cause a draft of air from the sald central space along lines parallel to the pipes whereby air is caused to move inward between the pipes to replace the air withdrawn from the central space.

In testimony whereof, I affix my signature, 1n presence of two witnesses.

JOHN B. BARTHQLOMEW.

\Vitnesses: J. M. CALDWELL, A. L. GREGORY. 

